Merge branch 'for-5.14/phy' into for-5.14/usb

This commit is contained in:
Thierry Reding 2021-06-11 18:15:36 +02:00
commit 23eca83155
5 changed files with 1955 additions and 252 deletions

View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016-2019, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/delay.h>
@ -113,6 +113,117 @@
#define ID_OVERRIDE_FLOATING ID_OVERRIDE(8)
#define ID_OVERRIDE_GROUNDED ID_OVERRIDE(0)
/* XUSB AO registers */
#define XUSB_AO_USB_DEBOUNCE_DEL (0x4)
#define UHSIC_LINE_DEB_CNT(x) (((x) & 0xf) << 4)
#define UTMIP_LINE_DEB_CNT(x) ((x) & 0xf)
#define XUSB_AO_UTMIP_TRIGGERS(x) (0x40 + (x) * 4)
#define CLR_WALK_PTR BIT(0)
#define CAP_CFG BIT(1)
#define CLR_WAKE_ALARM BIT(3)
#define XUSB_AO_UHSIC_TRIGGERS(x) (0x60 + (x) * 4)
#define HSIC_CLR_WALK_PTR BIT(0)
#define HSIC_CLR_WAKE_ALARM BIT(3)
#define HSIC_CAP_CFG BIT(4)
#define XUSB_AO_UTMIP_SAVED_STATE(x) (0x70 + (x) * 4)
#define SPEED(x) ((x) & 0x3)
#define UTMI_HS SPEED(0)
#define UTMI_FS SPEED(1)
#define UTMI_LS SPEED(2)
#define UTMI_RST SPEED(3)
#define XUSB_AO_UHSIC_SAVED_STATE(x) (0x90 + (x) * 4)
#define MODE(x) ((x) & 0x1)
#define MODE_HS MODE(0)
#define MODE_RST MODE(1)
#define XUSB_AO_UTMIP_SLEEPWALK_CFG(x) (0xd0 + (x) * 4)
#define XUSB_AO_UHSIC_SLEEPWALK_CFG(x) (0xf0 + (x) * 4)
#define FAKE_USBOP_VAL BIT(0)
#define FAKE_USBON_VAL BIT(1)
#define FAKE_USBOP_EN BIT(2)
#define FAKE_USBON_EN BIT(3)
#define FAKE_STROBE_VAL BIT(0)
#define FAKE_DATA_VAL BIT(1)
#define FAKE_STROBE_EN BIT(2)
#define FAKE_DATA_EN BIT(3)
#define WAKE_WALK_EN BIT(14)
#define MASTER_ENABLE BIT(15)
#define LINEVAL_WALK_EN BIT(16)
#define WAKE_VAL(x) (((x) & 0xf) << 17)
#define WAKE_VAL_NONE WAKE_VAL(12)
#define WAKE_VAL_ANY WAKE_VAL(15)
#define WAKE_VAL_DS10 WAKE_VAL(2)
#define LINE_WAKEUP_EN BIT(21)
#define MASTER_CFG_SEL BIT(22)
#define XUSB_AO_UTMIP_SLEEPWALK(x) (0x100 + (x) * 4)
/* phase A */
#define USBOP_RPD_A BIT(0)
#define USBON_RPD_A BIT(1)
#define AP_A BIT(4)
#define AN_A BIT(5)
#define HIGHZ_A BIT(6)
/* phase B */
#define USBOP_RPD_B BIT(8)
#define USBON_RPD_B BIT(9)
#define AP_B BIT(12)
#define AN_B BIT(13)
#define HIGHZ_B BIT(14)
/* phase C */
#define USBOP_RPD_C BIT(16)
#define USBON_RPD_C BIT(17)
#define AP_C BIT(20)
#define AN_C BIT(21)
#define HIGHZ_C BIT(22)
/* phase D */
#define USBOP_RPD_D BIT(24)
#define USBON_RPD_D BIT(25)
#define AP_D BIT(28)
#define AN_D BIT(29)
#define HIGHZ_D BIT(30)
#define XUSB_AO_UHSIC_SLEEPWALK(x) (0x120 + (x) * 4)
/* phase A */
#define RPD_STROBE_A BIT(0)
#define RPD_DATA0_A BIT(1)
#define RPU_STROBE_A BIT(2)
#define RPU_DATA0_A BIT(3)
/* phase B */
#define RPD_STROBE_B BIT(8)
#define RPD_DATA0_B BIT(9)
#define RPU_STROBE_B BIT(10)
#define RPU_DATA0_B BIT(11)
/* phase C */
#define RPD_STROBE_C BIT(16)
#define RPD_DATA0_C BIT(17)
#define RPU_STROBE_C BIT(18)
#define RPU_DATA0_C BIT(19)
/* phase D */
#define RPD_STROBE_D BIT(24)
#define RPD_DATA0_D BIT(25)
#define RPU_STROBE_D BIT(26)
#define RPU_DATA0_D BIT(27)
#define XUSB_AO_UTMIP_PAD_CFG(x) (0x130 + (x) * 4)
#define FSLS_USE_XUSB_AO BIT(3)
#define TRK_CTRL_USE_XUSB_AO BIT(4)
#define RPD_CTRL_USE_XUSB_AO BIT(5)
#define RPU_USE_XUSB_AO BIT(6)
#define VREG_USE_XUSB_AO BIT(7)
#define USBOP_VAL_PD BIT(8)
#define USBON_VAL_PD BIT(9)
#define E_DPD_OVRD_EN BIT(10)
#define E_DPD_OVRD_VAL BIT(11)
#define XUSB_AO_UHSIC_PAD_CFG(x) (0x150 + (x) * 4)
#define STROBE_VAL_PD BIT(0)
#define DATA0_VAL_PD BIT(1)
#define USE_XUSB_AO BIT(4)
#define TEGRA186_LANE(_name, _offset, _shift, _mask, _type) \
{ \
.name = _name, \
@ -130,16 +241,37 @@ struct tegra_xusb_fuse_calibration {
u32 rpd_ctrl;
};
struct tegra186_xusb_padctl_context {
u32 vbus_id;
u32 usb2_pad_mux;
u32 usb2_port_cap;
u32 ss_port_cap;
};
struct tegra186_xusb_padctl {
struct tegra_xusb_padctl base;
void __iomem *ao_regs;
struct tegra_xusb_fuse_calibration calib;
/* UTMI bias and tracking */
struct clk *usb2_trk_clk;
unsigned int bias_pad_enable;
/* padctl context */
struct tegra186_xusb_padctl_context context;
};
static inline void ao_writel(struct tegra186_xusb_padctl *priv, u32 value, unsigned int offset)
{
writel(value, priv->ao_regs + offset);
}
static inline u32 ao_readl(struct tegra186_xusb_padctl *priv, unsigned int offset)
{
return readl(priv->ao_regs + offset);
}
static inline struct tegra186_xusb_padctl *
to_tegra186_xusb_padctl(struct tegra_xusb_padctl *padctl)
{
@ -180,9 +312,264 @@ static void tegra186_usb2_lane_remove(struct tegra_xusb_lane *lane)
kfree(usb2);
}
static int tegra186_utmi_enable_phy_sleepwalk(struct tegra_xusb_lane *lane,
enum usb_device_speed speed)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra186_xusb_padctl *priv = to_tegra186_xusb_padctl(padctl);
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
/* ensure sleepwalk logic is disabled */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~MASTER_ENABLE;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* ensure sleepwalk logics are in low power mode */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value |= MASTER_CFG_SEL;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* set debounce time */
value = ao_readl(priv, XUSB_AO_USB_DEBOUNCE_DEL);
value &= ~UTMIP_LINE_DEB_CNT(~0);
value |= UTMIP_LINE_DEB_CNT(1);
ao_writel(priv, value, XUSB_AO_USB_DEBOUNCE_DEL);
/* ensure fake events of sleepwalk logic are desiabled */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~(FAKE_USBOP_VAL | FAKE_USBON_VAL |
FAKE_USBOP_EN | FAKE_USBON_EN);
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* ensure wake events of sleepwalk logic are not latched */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~LINE_WAKEUP_EN;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* disable wake event triggers of sleepwalk logic */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~WAKE_VAL(~0);
value |= WAKE_VAL_NONE;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* power down the line state detectors of the pad */
value = ao_readl(priv, XUSB_AO_UTMIP_PAD_CFG(index));
value |= (USBOP_VAL_PD | USBON_VAL_PD);
ao_writel(priv, value, XUSB_AO_UTMIP_PAD_CFG(index));
/* save state per speed */
value = ao_readl(priv, XUSB_AO_UTMIP_SAVED_STATE(index));
value &= ~SPEED(~0);
switch (speed) {
case USB_SPEED_HIGH:
value |= UTMI_HS;
break;
case USB_SPEED_FULL:
value |= UTMI_FS;
break;
case USB_SPEED_LOW:
value |= UTMI_LS;
break;
default:
value |= UTMI_RST;
break;
}
ao_writel(priv, value, XUSB_AO_UTMIP_SAVED_STATE(index));
/* enable the trigger of the sleepwalk logic */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value |= LINEVAL_WALK_EN;
value &= ~WAKE_WALK_EN;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* reset the walk pointer and clear the alarm of the sleepwalk logic,
* as well as capture the configuration of the USB2.0 pad
*/
value = ao_readl(priv, XUSB_AO_UTMIP_TRIGGERS(index));
value |= (CLR_WALK_PTR | CLR_WAKE_ALARM | CAP_CFG);
ao_writel(priv, value, XUSB_AO_UTMIP_TRIGGERS(index));
/* setup the pull-ups and pull-downs of the signals during the four
* stages of sleepwalk.
* if device is connected, program sleepwalk logic to maintain a J and
* keep driving K upon seeing remote wake.
*/
value = USBOP_RPD_A | USBOP_RPD_B | USBOP_RPD_C | USBOP_RPD_D;
value |= USBON_RPD_A | USBON_RPD_B | USBON_RPD_C | USBON_RPD_D;
switch (speed) {
case USB_SPEED_HIGH:
case USB_SPEED_FULL:
/* J state: D+/D- = high/low, K state: D+/D- = low/high */
value |= HIGHZ_A;
value |= AP_A;
value |= AN_B | AN_C | AN_D;
break;
case USB_SPEED_LOW:
/* J state: D+/D- = low/high, K state: D+/D- = high/low */
value |= HIGHZ_A;
value |= AN_A;
value |= AP_B | AP_C | AP_D;
break;
default:
value |= HIGHZ_A | HIGHZ_B | HIGHZ_C | HIGHZ_D;
break;
}
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK(index));
/* power up the line state detectors of the pad */
value = ao_readl(priv, XUSB_AO_UTMIP_PAD_CFG(index));
value &= ~(USBOP_VAL_PD | USBON_VAL_PD);
ao_writel(priv, value, XUSB_AO_UTMIP_PAD_CFG(index));
usleep_range(150, 200);
/* switch the electric control of the USB2.0 pad to XUSB_AO */
value = ao_readl(priv, XUSB_AO_UTMIP_PAD_CFG(index));
value |= FSLS_USE_XUSB_AO | TRK_CTRL_USE_XUSB_AO | RPD_CTRL_USE_XUSB_AO |
RPU_USE_XUSB_AO | VREG_USE_XUSB_AO;
ao_writel(priv, value, XUSB_AO_UTMIP_PAD_CFG(index));
/* set the wake signaling trigger events */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~WAKE_VAL(~0);
value |= WAKE_VAL_ANY;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* enable the wake detection */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value |= MASTER_ENABLE | LINE_WAKEUP_EN;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_utmi_disable_phy_sleepwalk(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra186_xusb_padctl *priv = to_tegra186_xusb_padctl(padctl);
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
/* disable the wake detection */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~(MASTER_ENABLE | LINE_WAKEUP_EN);
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* switch the electric control of the USB2.0 pad to XUSB vcore logic */
value = ao_readl(priv, XUSB_AO_UTMIP_PAD_CFG(index));
value &= ~(FSLS_USE_XUSB_AO | TRK_CTRL_USE_XUSB_AO | RPD_CTRL_USE_XUSB_AO |
RPU_USE_XUSB_AO | VREG_USE_XUSB_AO);
ao_writel(priv, value, XUSB_AO_UTMIP_PAD_CFG(index));
/* disable wake event triggers of sleepwalk logic */
value = ao_readl(priv, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
value &= ~WAKE_VAL(~0);
value |= WAKE_VAL_NONE;
ao_writel(priv, value, XUSB_AO_UTMIP_SLEEPWALK_CFG(index));
/* power down the line state detectors of the port */
value = ao_readl(priv, XUSB_AO_UTMIP_PAD_CFG(index));
value |= USBOP_VAL_PD | USBON_VAL_PD;
ao_writel(priv, value, XUSB_AO_UTMIP_PAD_CFG(index));
/* clear alarm of the sleepwalk logic */
value = ao_readl(priv, XUSB_AO_UTMIP_TRIGGERS(index));
value |= CLR_WAKE_ALARM;
ao_writel(priv, value, XUSB_AO_UTMIP_TRIGGERS(index));
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_utmi_enable_phy_wake(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= USB2_PORT_WAKEUP_EVENT(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(10, 20);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= USB2_PORT_WAKE_INTERRUPT_ENABLE(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_utmi_disable_phy_wake(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value &= ~USB2_PORT_WAKE_INTERRUPT_ENABLE(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(10, 20);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= USB2_PORT_WAKEUP_EVENT(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
mutex_unlock(&padctl->lock);
return 0;
}
static bool tegra186_utmi_phy_remote_wake_detected(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
if ((value & USB2_PORT_WAKE_INTERRUPT_ENABLE(index)) &&
(value & USB2_PORT_WAKEUP_EVENT(index)))
return true;
return false;
}
static const struct tegra_xusb_lane_ops tegra186_usb2_lane_ops = {
.probe = tegra186_usb2_lane_probe,
.remove = tegra186_usb2_lane_remove,
.enable_phy_sleepwalk = tegra186_utmi_enable_phy_sleepwalk,
.disable_phy_sleepwalk = tegra186_utmi_disable_phy_sleepwalk,
.enable_phy_wake = tegra186_utmi_enable_phy_wake,
.disable_phy_wake = tegra186_utmi_disable_phy_wake,
.remote_wake_detected = tegra186_utmi_phy_remote_wake_detected,
};
static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl)
@ -656,10 +1043,128 @@ static void tegra186_usb3_lane_remove(struct tegra_xusb_lane *lane)
kfree(usb3);
}
static int tegra186_usb3_enable_phy_sleepwalk(struct tegra_xusb_lane *lane,
enum usb_device_speed speed)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM_1);
value |= SSPX_ELPG_CLAMP_EN_EARLY(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM_1);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM_1);
value |= SSPX_ELPG_CLAMP_EN(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM_1);
usleep_range(250, 350);
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_usb3_disable_phy_sleepwalk(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM_1);
value &= ~SSPX_ELPG_CLAMP_EN_EARLY(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM_1);
usleep_range(100, 200);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM_1);
value &= ~SSPX_ELPG_CLAMP_EN(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM_1);
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_usb3_enable_phy_wake(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= SS_PORT_WAKEUP_EVENT(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(10, 20);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= SS_PORT_WAKE_INTERRUPT_ENABLE(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
mutex_unlock(&padctl->lock);
return 0;
}
static int tegra186_usb3_disable_phy_wake(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
mutex_lock(&padctl->lock);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value &= ~SS_PORT_WAKE_INTERRUPT_ENABLE(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
usleep_range(10, 20);
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
value &= ~ALL_WAKE_EVENTS;
value |= SS_PORT_WAKEUP_EVENT(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
mutex_unlock(&padctl->lock);
return 0;
}
static bool tegra186_usb3_phy_remote_wake_detected(struct tegra_xusb_lane *lane)
{
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
unsigned int index = lane->index;
u32 value;
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
if ((value & SS_PORT_WAKE_INTERRUPT_ENABLE(index)) && (value & SS_PORT_WAKEUP_EVENT(index)))
return true;
return false;
}
static const struct tegra_xusb_lane_ops tegra186_usb3_lane_ops = {
.probe = tegra186_usb3_lane_probe,
.remove = tegra186_usb3_lane_remove,
.enable_phy_sleepwalk = tegra186_usb3_enable_phy_sleepwalk,
.disable_phy_sleepwalk = tegra186_usb3_disable_phy_sleepwalk,
.enable_phy_wake = tegra186_usb3_enable_phy_wake,
.disable_phy_wake = tegra186_usb3_disable_phy_wake,
.remote_wake_detected = tegra186_usb3_phy_remote_wake_detected,
};
static int tegra186_usb3_port_enable(struct tegra_xusb_port *port)
{
return 0;
@ -913,7 +1418,9 @@ static struct tegra_xusb_padctl *
tegra186_xusb_padctl_probe(struct device *dev,
const struct tegra_xusb_padctl_soc *soc)
{
struct platform_device *pdev = to_platform_device(dev);
struct tegra186_xusb_padctl *priv;
struct resource *res;
int err;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@ -923,6 +1430,11 @@ tegra186_xusb_padctl_probe(struct device *dev,
priv->base.dev = dev;
priv->base.soc = soc;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ao");
priv->ao_regs = devm_ioremap_resource(dev, res);
if (IS_ERR(priv->ao_regs))
return ERR_CAST(priv->ao_regs);
err = tegra186_xusb_read_fuse_calibration(priv);
if (err < 0)
return ERR_PTR(err);
@ -930,6 +1442,40 @@ tegra186_xusb_padctl_probe(struct device *dev,
return &priv->base;
}
static void tegra186_xusb_padctl_save(struct tegra_xusb_padctl *padctl)
{
struct tegra186_xusb_padctl *priv = to_tegra186_xusb_padctl(padctl);
priv->context.vbus_id = padctl_readl(padctl, USB2_VBUS_ID);
priv->context.usb2_pad_mux = padctl_readl(padctl, XUSB_PADCTL_USB2_PAD_MUX);
priv->context.usb2_port_cap = padctl_readl(padctl, XUSB_PADCTL_USB2_PORT_CAP);
priv->context.ss_port_cap = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_CAP);
}
static void tegra186_xusb_padctl_restore(struct tegra_xusb_padctl *padctl)
{
struct tegra186_xusb_padctl *priv = to_tegra186_xusb_padctl(padctl);
padctl_writel(padctl, priv->context.usb2_pad_mux, XUSB_PADCTL_USB2_PAD_MUX);
padctl_writel(padctl, priv->context.usb2_port_cap, XUSB_PADCTL_USB2_PORT_CAP);
padctl_writel(padctl, priv->context.ss_port_cap, XUSB_PADCTL_SS_PORT_CAP);
padctl_writel(padctl, priv->context.vbus_id, USB2_VBUS_ID);
}
static int tegra186_xusb_padctl_suspend_noirq(struct tegra_xusb_padctl *padctl)
{
tegra186_xusb_padctl_save(padctl);
return 0;
}
static int tegra186_xusb_padctl_resume_noirq(struct tegra_xusb_padctl *padctl)
{
tegra186_xusb_padctl_restore(padctl);
return 0;
}
static void tegra186_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
{
}
@ -937,6 +1483,8 @@ static void tegra186_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
static const struct tegra_xusb_padctl_ops tegra186_xusb_padctl_ops = {
.probe = tegra186_xusb_padctl_probe,
.remove = tegra186_xusb_padctl_remove,
.suspend_noirq = tegra186_xusb_padctl_suspend_noirq,
.resume_noirq = tegra186_xusb_padctl_resume_noirq,
.vbus_override = tegra186_xusb_padctl_vbus_override,
};

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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/delay.h>
@ -321,11 +321,17 @@ static void tegra_xusb_lane_program(struct tegra_xusb_lane *lane)
if (soc->num_funcs < 2)
return;
if (lane->pad->ops->iddq_enable)
lane->pad->ops->iddq_enable(lane);
/* choose function */
value = padctl_readl(padctl, soc->offset);
value &= ~(soc->mask << soc->shift);
value |= lane->function << soc->shift;
padctl_writel(padctl, value, soc->offset);
if (lane->pad->ops->iddq_disable)
lane->pad->ops->iddq_disable(lane);
}
static void tegra_xusb_pad_program(struct tegra_xusb_pad *pad)
@ -376,7 +382,7 @@ static int tegra_xusb_setup_pads(struct tegra_xusb_padctl *padctl)
return 0;
}
static bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane,
bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane,
const char *function)
{
const char *func = lane->soc->funcs[lane->function];
@ -1267,10 +1273,36 @@ static int tegra_xusb_padctl_remove(struct platform_device *pdev)
return err;
}
static int tegra_xusb_padctl_suspend_noirq(struct device *dev)
{
struct tegra_xusb_padctl *padctl = dev_get_drvdata(dev);
if (padctl->soc && padctl->soc->ops && padctl->soc->ops->suspend_noirq)
return padctl->soc->ops->suspend_noirq(padctl);
return 0;
}
static int tegra_xusb_padctl_resume_noirq(struct device *dev)
{
struct tegra_xusb_padctl *padctl = dev_get_drvdata(dev);
if (padctl->soc && padctl->soc->ops && padctl->soc->ops->resume_noirq)
return padctl->soc->ops->resume_noirq(padctl);
return 0;
}
static const struct dev_pm_ops tegra_xusb_padctl_pm_ops = {
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(tegra_xusb_padctl_suspend_noirq,
tegra_xusb_padctl_resume_noirq)
};
static struct platform_driver tegra_xusb_padctl_driver = {
.driver = {
.name = "tegra-xusb-padctl",
.of_match_table = tegra_xusb_padctl_of_match,
.pm = &tegra_xusb_padctl_pm_ops,
},
.probe = tegra_xusb_padctl_probe,
.remove = tegra_xusb_padctl_remove,
@ -1337,6 +1369,62 @@ int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl,
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_hsic_set_idle);
int tegra_xusb_padctl_enable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy,
enum usb_device_speed speed)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
if (lane->pad->ops->enable_phy_sleepwalk)
return lane->pad->ops->enable_phy_sleepwalk(lane, speed);
return -EOPNOTSUPP;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_enable_phy_sleepwalk);
int tegra_xusb_padctl_disable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
if (lane->pad->ops->disable_phy_sleepwalk)
return lane->pad->ops->disable_phy_sleepwalk(lane);
return -EOPNOTSUPP;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_disable_phy_sleepwalk);
int tegra_xusb_padctl_enable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
if (lane->pad->ops->enable_phy_wake)
return lane->pad->ops->enable_phy_wake(lane);
return -EOPNOTSUPP;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_enable_phy_wake);
int tegra_xusb_padctl_disable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
if (lane->pad->ops->disable_phy_wake)
return lane->pad->ops->disable_phy_wake(lane);
return -EOPNOTSUPP;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_disable_phy_wake);
bool tegra_xusb_padctl_remote_wake_detected(struct tegra_xusb_padctl *padctl, struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
if (lane->pad->ops->remote_wake_detected)
return lane->pad->ops->remote_wake_detected(lane);
return false;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_remote_wake_detected);
int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
unsigned int port, bool enable)
{

View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2015, Google Inc.
*/
@ -11,6 +11,7 @@
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <linux/usb/ch9.h>
#include <linux/usb/otg.h>
#include <linux/usb/role.h>
@ -35,6 +36,10 @@ struct tegra_xusb_lane_soc {
const char * const *funcs;
unsigned int num_funcs;
struct {
unsigned int misc_ctl2;
} regs;
};
struct tegra_xusb_lane {
@ -126,8 +131,17 @@ struct tegra_xusb_lane_ops {
struct device_node *np,
unsigned int index);
void (*remove)(struct tegra_xusb_lane *lane);
void (*iddq_enable)(struct tegra_xusb_lane *lane);
void (*iddq_disable)(struct tegra_xusb_lane *lane);
int (*enable_phy_sleepwalk)(struct tegra_xusb_lane *lane, enum usb_device_speed speed);
int (*disable_phy_sleepwalk)(struct tegra_xusb_lane *lane);
int (*enable_phy_wake)(struct tegra_xusb_lane *lane);
int (*disable_phy_wake)(struct tegra_xusb_lane *lane);
bool (*remote_wake_detected)(struct tegra_xusb_lane *lane);
};
bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane, const char *function);
/*
* pads
*/
@ -230,7 +244,7 @@ struct tegra_xusb_pcie_pad {
struct reset_control *rst;
struct clk *pll;
unsigned int enable;
bool enable;
};
static inline struct tegra_xusb_pcie_pad *
@ -245,7 +259,7 @@ struct tegra_xusb_sata_pad {
struct reset_control *rst;
struct clk *pll;
unsigned int enable;
bool enable;
};
static inline struct tegra_xusb_sata_pad *
@ -388,6 +402,8 @@ struct tegra_xusb_padctl_ops {
const struct tegra_xusb_padctl_soc *soc);
void (*remove)(struct tegra_xusb_padctl *padctl);
int (*suspend_noirq)(struct tegra_xusb_padctl *padctl);
int (*resume_noirq)(struct tegra_xusb_padctl *padctl);
int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
unsigned int index);
int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,

View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef PHY_TEGRA_XUSB_H
@ -8,6 +8,7 @@
struct tegra_xusb_padctl;
struct device;
enum usb_device_speed;
struct tegra_xusb_padctl *tegra_xusb_padctl_get(struct device *dev);
void tegra_xusb_padctl_put(struct tegra_xusb_padctl *padctl);
@ -23,4 +24,11 @@ int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl,
int tegra_phy_xusb_utmi_port_reset(struct phy *phy);
int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
unsigned int port);
int tegra_xusb_padctl_enable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy,
enum usb_device_speed speed);
int tegra_xusb_padctl_disable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy);
int tegra_xusb_padctl_enable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy);
int tegra_xusb_padctl_disable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy);
bool tegra_xusb_padctl_remote_wake_detected(struct tegra_xusb_padctl *padctl, struct phy *phy);
#endif /* PHY_TEGRA_XUSB_H */